Week 5 Blood Pressure Flashcards

1
Q

Blood Pressure

A

Is the force of blood pushing against the walls of the arteries as the heart pumps it around the body.

  • Controlled by the cardiac output and peripheral vascular reisistance
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2
Q

What are the factors on blood Pressure

A
  • Pumping action of the heart
  • Peripheral vascular resistance
  • Blood volume
  • Blood viscosity
  • Venous Return
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3
Q

What is it measure in Blood Pressure

A
  • measured in millimetres of mercury mmHG
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4
Q

Blood Pressure of a New born

A

40 (mean)

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5
Q

Blood Pressure of a 1 year old

A

85/54

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6
Q

Blood Pressure of a 6 year old

A

95/65

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7
Q

Blood Pressure of 14-17 year old

A

120/75

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8
Q

Blood Pressure of a middle adult

A

<120/80

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9
Q

What is cardiac output

A
  • how much volume of blood per min pumped
  • heart rate and stroke volume
  • increase in any of these increases the blood pressure
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10
Q

Systolic blood pressure

A
  • Maximum pressure of the blood against the wall of the artery
  • Occurs during ventricular contraction
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11
Q

Diastolic blood pressure

A
  • The minimum pressure of blood against the wall of the artery
  • Occurs during ventricular relaxation
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12
Q

Normal pressure range systolic and diastolic ranges

A

Systolic : 90-120mmHg
Diastolic: 60-80mmHg

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13
Q

Normal blood pressure and arterial pressure range

A

Blood Pressure: 120/80mmHg
Aterial Pressure: 70-100mmHg

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14
Q

Mean Arterial Pressure (MAP)

A
  • Average pressure throughout 1 cardiac cycle: systole and diatom
  • 2/3 diastolic pressure + 1/3 systolic pressure
  • Indication of overall perfusion of the body
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15
Q

Perfusion

A
  • Refers to the process of delivering blood to the body’s tissues and organs.
  • Requires enough blood volume and heart and vessels
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16
Q

Compensation Mechanism

A
  • decreased blood volume = decreased stroke volume and decreased cardiac output
  • increase the heart heart tachycardia and tachypnoea + vasoconstriction
17
Q

Things that influence blood pressure

A
  • Obesity
  • Exercise
  • Stress/Anxiety/Fear
  • Diabetes